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File name : seg6.h

Content :/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * SR-IPv6 implementation * * Author: * David Lebrun <david.lebrun@uclouvain.be> * * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_SEG6_H #define _LINUX_SEG6_H #include <linux/types.h> #include <linux/in6.h> /* For struct in6_addr. */ /* * SRH */ struct ipv6_sr_hdr { __u8 nexthdr; __u8 hdrlen; __u8 type; __u8 segments_left; __u8 first_segment; /* Represents the last_entry field of SRH */ __u8 flags; __u16 tag; struct in6_addr segments[0]; }; #define SR6_FLAG1_PROTECTED (1 << 6) #define SR6_FLAG1_OAM (1 << 5) #define SR6_FLAG1_ALERT (1 << 4) #define SR6_FLAG1_HMAC (1 << 3) #define SR6_TLV_INGRESS 1 #define SR6_TLV_EGRESS 2 #define SR6_TLV_OPAQUE 3 #define SR6_TLV_PADDING 4 #define SR6_TLV_HMAC 5 #define sr_has_hmac(srh) ((srh)->flags & SR6_FLAG1_HMAC) struct sr6_tlv { __u8 type; __u8 len; __u8 data[0]; }; #endif

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